CISA Known Exploited Vulnerabilities Catalog

For the benefit of the cybersecurity community and network defenders—and to help every organization better manage vulnerabilities and keep pace with threat activity—CISA maintains the authoritative source of vulnerabilities that have been exploited in the wild. Organizations should use the KEV catalog as an input to their vulnerability management prioritization framework.Y

    7.5

    CVSS31
    CVE-2020-0674 - Microsoft Internet Explorer Scripting Engine Memory Corruption Vulnerability -

    Action Due May 03, 2022 Target Vendor : Microsoft

    Description : Microsoft Internet Explorer contains a memory corruption vulnerability due to the way the Scripting Engine handles objects in memory. Successful exploitation could allow remote code execution in the context of the current user.

    Action : Apply updates per vendor instructions.

    Known To Be Used in Ransomware Campaigns? : Unknown

    Alert Date: Nov 03, 2021 | 1051 days ago

    7.6

    CVSS31
    CVE-2021-27059 - Microsoft Office Remote Code Execution Vulnerability -

    Action Due Nov 17, 2021 Target Vendor : Microsoft

    Description : Microsoft Office contains an unspecified vulnerability that allows for remote code execution.

    Action : Apply updates per vendor instructions.

    Known To Be Used in Ransomware Campaigns? : Unknown

    Alert Date: Nov 03, 2021 | 1051 days ago

    7.5

    CVSS31
    CVE-2019-1367 - Microsoft Internet Explorer Scripting Engine Memory Corruption Vulnerability -

    Action Due May 03, 2022 Target Vendor : Microsoft

    Description : Microsoft Internet Explorer contains a memory corruption vulnerability in how the scripting engine handles objects in memory. Successful exploitation allows for remote code execution in the context of the current user.

    Action : Apply updates per vendor instructions.

    Known To Be Used in Ransomware Campaigns? : Known

    Alert Date: Nov 03, 2021 | 1051 days ago

    7.8

    CVSS31
    CVE-2017-0199 - Microsoft Office and WordPad Remote Code Execution Vulnerability -

    Action Due May 03, 2022 Target Vendor : Microsoft

    Description : Microsoft Office and WordPad contain an unspecified vulnerability due to the way the applications parse specially crafted files. Successful exploitation allows for remote code execution.

    Action : Apply updates per vendor instructions.

    Known To Be Used in Ransomware Campaigns? : Known

    Alert Date: Nov 03, 2021 | 1051 days ago

    8.8

    CVSS31
    CVE-2020-1380 - Microsoft Internet Explorer Scripting Engine Memory Corruption Vulnerability -

    Action Due May 03, 2022 Target Vendor : Microsoft

    Description : Microsoft Internet Explorer contains a memory corruption vulnerability which can allow for remote code execution in the context of the current user.

    Action : Apply updates per vendor instructions.

    Known To Be Used in Ransomware Campaigns? : Unknown

    Alert Date: Nov 03, 2021 | 1051 days ago

    7.5

    CVSS31
    CVE-2019-1429 - Microsoft Internet Explorer Scripting Engine Memory Corruption Vulnerability -

    Action Due May 03, 2022 Target Vendor : Microsoft

    Description : Microsoft Internet Explorer contains a memory corruption vulnerability which can allow for remote code execution in the context of the current user.

    Action : Apply updates per vendor instructions.

    Known To Be Used in Ransomware Campaigns? : Unknown

    Alert Date: Nov 03, 2021 | 1051 days ago

    7.8

    CVSS31
    CVE-2017-11774 - Microsoft Office Outlook Security Feature Bypass Vulnerability -

    Action Due May 03, 2022 Target Vendor : Microsoft

    Description : Microsoft Office Outlook contains a security feature bypass vulnerability due to improperly handling objects in memory. Successful exploitation allows an attacker to execute commands.

    Action : Apply updates per vendor instructions.

    Known To Be Used in Ransomware Campaigns? : Unknown

    Alert Date: Nov 03, 2021 | 1051 days ago

    7.5

    CVSS31
    CVE-2020-0968 - Microsoft Internet Explorer Scripting Engine Memory Corruption Vulnerability -

    Action Due May 03, 2022 Target Vendor : Microsoft

    Description : Microsoft Internet Explorer contains a memory corruption vulnerability due to how the Scripting Engine handles objects in memory, leading to remote code execution.

    Action : Apply updates per vendor instructions.

    Known To Be Used in Ransomware Campaigns? : Unknown

    Alert Date: Nov 03, 2021 | 1051 days ago

    10.0

    CVSS31
    CVE-2020-1472 - Microsoft Netlogon Privilege Escalation Vulnerability -

    Action Due Sep 21, 2020 Target Vendor : Microsoft

    Description : Microsoft's Netlogon Remote Protocol (MS-NRPC) contains a privilege escalation vulnerability when an attacker establishes a vulnerable Netlogon secure channel connection to a domain controller. An attacker who successfully exploits the vulnerability could run a specially crafted application on a device on the network. The vulnerability is also known under the moniker of Zerologon.

    Action : Apply updates per vendor instructions.

    Known To Be Used in Ransomware Campaigns? : Known

    Notes : Reference CISA's ED 20-03 (https://www.cisa.gov/emergency-directive-20-03) for further guidance and requirements.

    Alert Date: Nov 03, 2021 | 1051 days ago

    9.8

    CVSS31
    CVE-2021-26855 - Microsoft Exchange Server Remote Code Execution Vulnerability -

    Action Due Apr 16, 2021 Target Vendor : Microsoft

    Description : Microsoft Exchange Server contains an unspecified vulnerability that allows for remote code execution. This vulnerability is part of the ProxyLogon exploit chain.

    Action : Apply updates per vendor instructions.

    Known To Be Used in Ransomware Campaigns? : Known

    Notes : Reference CISA's ED 21-02 (https://www.cisa.gov/emergency-directive-21-02) for further guidance and requirements.

    Alert Date: Nov 03, 2021 | 1051 days ago

    7.8

    CVSS31
    CVE-2021-26858 - Microsoft Exchange Server Remote Code Execution Vulnerability -

    Action Due Apr 16, 2021 Target Vendor : Microsoft

    Description : Microsoft Exchange Server contains an unspecified vulnerability that allows for remote code execution. This vulnerability is part of the ProxyLogon exploit chain.

    Action : Apply updates per vendor instructions.

    Known To Be Used in Ransomware Campaigns? : Known

    Notes : Reference CISA's ED 21-02 (https://www.cisa.gov/emergency-directive-21-02) for further guidance and requirements.

    Alert Date: Nov 03, 2021 | 1051 days ago

    7.8

    CVSS31
    CVE-2021-27065 - Microsoft Exchange Server Remote Code Execution Vulnerability -

    Action Due Apr 16, 2021 Target Vendor : Microsoft

    Description : Microsoft Exchange Server contains an unspecified vulnerability that allows for remote code execution. This vulnerability is part of the ProxyLogon exploit chain.

    Action : Apply updates per vendor instructions.

    Known To Be Used in Ransomware Campaigns? : Known

    Notes : Reference CISA's ED 21-02 (https://www.cisa.gov/emergency-directive-21-02) for further guidance and requirements.

    Alert Date: Nov 03, 2021 | 1051 days ago

    7.8

    CVSS31
    CVE-2020-1054 - Microsoft Win32k Privilege Escalation Vulnerability -

    Action Due May 03, 2022 Target Vendor : Microsoft

    Description : Microsoft Win32k contains a privilege escalation vulnerability when the Windows kernel-mode driver fails to properly handle objects in memory. Successful exploitation allows an attacker to execute code in kernel mode.

    Action : Apply updates per vendor instructions.

    Known To Be Used in Ransomware Campaigns? : Unknown

    Alert Date: Nov 03, 2021 | 1051 days ago

    7.8

    CVSS31
    CVE-2021-1675 - Microsoft Windows Print Spooler Remote Code Execution Vulnerability -

    Action Due Nov 17, 2021 Target Vendor : Microsoft

    Description : Microsoft Windows Print Spooler contains an unspecified vulnerability that allows for remote code execution.

    Action : Apply updates per vendor instructions.

    Known To Be Used in Ransomware Campaigns? : Known

    Alert Date: Nov 03, 2021 | 1051 days ago

    8.8

    CVSS31
    CVE-2021-34448 - Microsoft Windows Scripting Engine Memory Corruption Vulnerability -

    Action Due Nov 17, 2021 Target Vendor : Microsoft

    Description : Microsoft Windows Scripting Engine contains an unspecified vulnerability that allows for memory corruption.

    Action : Apply updates per vendor instructions.

    Known To Be Used in Ransomware Campaigns? : Unknown

    Alert Date: Nov 03, 2021 | 1051 days ago

    8.1

    CVSS31
    CVE-2020-0601 - Microsoft Windows CryptoAPI Spoofing Vulnerability -

    Action Due Jan 29, 2020 Target Vendor : Microsoft

    Description : Microsoft Windows CryptoAPI (Crypt32.dll) contains a spoofing vulnerability in the way it validates Elliptic Curve Cryptography (ECC) certificates. An attacker could exploit the vulnerability by using a spoofed code-signing certificate to sign a malicious executable, making it appear the file was from a trusted, legitimate source. A successful exploit could also allow the attacker to conduct man-in-the-middle attacks and decrypt confidential information on user connections to the affected software. The vulnerability is also known under the moniker of CurveBall.

    Action : Apply updates per vendor instructions.

    Known To Be Used in Ransomware Campaigns? : Unknown

    Notes : Reference CISA's ED 20-02 (https://www.cisa.gov/emergency-directive-20-02) for further guidance and requirements.

    Alert Date: Nov 03, 2021 | 1051 days ago

    9.8

    CVSS31
    CVE-2019-0604 - Microsoft SharePoint Remote Code Execution Vulnerability -

    Action Due May 03, 2022 Target Vendor : Microsoft

    Description : Microsoft SharePoint fails to check the source markup of an application package. An attacker who successfully exploits the vulnerability could run remote code in the context of the SharePoint application pool and the SharePoint server farm account.

    Action : Apply updates per vendor instructions.

    Known To Be Used in Ransomware Campaigns? : Known

    Alert Date: Nov 03, 2021 | 1051 days ago

    9.8

    CVSS31
    CVE-2020-0646 - Microsoft .NET Framework Remote Code Execution Vulnerability -

    Action Due May 03, 2022 Target Vendor : Microsoft

    Description : Microsoft .NET Framework contains an improper input validation vulnerability that allows for remote code execution.

    Action : Apply updates per vendor instructions.

    Known To Be Used in Ransomware Campaigns? : Unknown

    Alert Date: Nov 03, 2021 | 1051 days ago

    7.8

    CVSS31
    CVE-2019-0808 - Microsoft Win32k Privilege Escalation Vulnerability -

    Action Due May 03, 2022 Target Vendor : Microsoft

    Description : Microsoft Win32k contains a privilege escalation vulnerability due to the component failing to properly handle objects in memory. Successful exploitation allows an attacker to run code in kernel mode.

    Action : Apply updates per vendor instructions.

    Known To Be Used in Ransomware Campaigns? : Unknown

    Alert Date: Nov 03, 2021 | 1051 days ago

    7.8

    CVSS31
    CVE-2021-26857 - Microsoft Exchange Server Remote Code Execution Vulnerability -

    Action Due Apr 16, 2021 Target Vendor : Microsoft

    Description : Microsoft Exchange Server contains an unspecified vulnerability that allows for remote code execution. This vulnerability is part of the ProxyLogon exploit chain.

    Action : Apply updates per vendor instructions.

    Known To Be Used in Ransomware Campaigns? : Known

    Notes : Reference CISA's ED 21-02 (https://www.cisa.gov/emergency-directive-21-02) for further guidance and requirements.

    Alert Date: Nov 03, 2021 | 1051 days ago
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